Hypoglycemia, or low blood sugar, is a rare ailment generally found in those who have diabetes, pancreatic tumors, adrenal or pituitary gland failure, liver disease, or who have had stomach surgery.  It occurs when the level of sugar, or glucose, in the blood drops too low to fuel the body. Blood sugar levels are usually in 70-80 mg/100 cc of blood before eating, and 120 to 140 in the first hour after a meal. When the blood sugar falls below 50, symptoms usually occur. If the blood sugar goes below 30, fainting, Seizures, Strokes, or even death may occur. Causes

Hypoglycemia is most commonly a complication of diabetes treatment. You can develop hypoglycemia by taking too much insulin or other diabetes medications.
Hypoglycemia is also associated with stomach surgery, certain medicines, alcohol, liver disease, pregnancy, and high fever.

Symptoms

The problem is usually signaled by sweating, shaking, hunger, weakness, faintness, heart palpitations, mental cloudiness, and nervousness, often accompanied by a headache. Other possible symptoms include confusion and sometimes even convulsions.

Treatment

Treatment for a sudden (acute) episode of hypoglycemia involves eating or drinking some form of sugar to restore your blood sugar to a normal level. Episodes of hypoglycemia caused by a long-term (chronic) health condition are treated the same way, but prevention of future episodes requires treatment or cure of the underlying condition. Patients are usually encouraged to eat small, but frequent, meals throughout the day, avoiding excess simple sugars (including alcohol), fats, and fruit drinks. Those patients with severe hypoglycemia may require fast acting glucagon injections that can stabilize their blood sugar within approximately 15 minutes.